DatabaseUpdateData.php, QuickFormQuery.php, formEditor.sql, TestFormEditor.sql: set new escapeDefaultSetting in Schema.

Fixed: unnecessary exception if there is no Form / FormElement table
Database.php: New function playSqlFile().
DatabaseUpdate.php: missing table Form won't throw an exception anymore.
Manual.rst: note that formEditor.sql will be played automatically.

Also respect version numbers which are not configured in DatabaseUpdateData.php and between two configured version numbers.

For updates of QFQ prior to 0.17.0, do:   ALTER TABLE  `Form` COMMENT =  'Version=<your old QFQ version>'
DatabaseUpdate.php, DatabaseUpdateData.php: new class.
QuickFormQuery.php: Add DB UpdateCheck
Database.php: moved to new subdirectory `database`. Add 'ALTER' as a new SQL command.
FormAction.php, TypeAhead.php, Report.php, Sendmail.php, FillStoreForm.php, Store.php, AbstractBuild.php, Delete.php, Evaluate.php: Update path to Database.php.

Makefile: qfq-doc
setVersion.sh: rename Setting.yml to Setting.cfg

README.md: temporary path to documentation

.*rst: Migration back from qfq-doc to qfq

Run sphinx before rolling ZIP files.

README.md: add link to official doc.

Manual.rst: Add 'General'. Explain in more detail why `[FE][lockIP] = 0` is necessary. Add ESCAPE_TYPE_DEFAULT to config.qfq.ini explanation. Rewrite explanation for typeAheadLdapSearchPerToken.

setVersion.sh: new script which updates all version numbers in different documents.

 #3659 / Bootstrap default view: 'small' - fixed. By default '--viewport-size=1280x1024' will be set to wkhtml. This moves BS rendering 'xs' to 'md'.

Html2Pdf.php: Fake the current 'user-agent' and add it as '--custom-header ...' AND '--custom-header-propagation' option to the wkhtmltopdf call. Without, T3 will deny FE Group access. The --custom-header-propagation seems to be necessary.

Manual.rst: describe new urlParam parameter `_sip`
Html2Pdf.php: optional SIP encoding

Html2Pdf.php: Add SIP support wkhtmltopdf URLs. Move cookies for wkhtmltopdf from commandline arguments to filebased.